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All Journal Jurnal Matematika & Sains Journal of Aceh Physics Society INDONESIAN JOURNAL OF APPLIED PHYSICS Jurnal Natural Aceh International Journal of Science and Technology Jurnal Pendidikan Sains Indonesia (Indonesian Journal of Science Education)
Adi Rahwanto
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Agriculture, Biological Sciences & Forestry Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Energy Immunology & microbiology Materials Science & Nanotechnology Mathematics Neuroscience Physics

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Journal : Journal of Aceh Physics Society

 1 
Identification of Oxide Compound in Dolomite Mineral from Aceh Tamiang Region Nirmala Sari; Zulkarnain Jalil; Adi Rahwanto
Journal of Aceh Physics Society Volume 2 Number 1, March 2013
Publisher : PSI-Aceh

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Abstract

Indonesia has abundant mineral especially carbonate-based mineral, ike dolomite. Particularly in Aceh province's, the largest dolomite deposits is available in Aceh Tamiang district around 1.9 billion tons. Unfortunately, current use of dolomite in the industry and other applications is still limited. In this work we report the advanced preparation of dolomite using calcinations method. Whereas, with this method, the dolomite mineral can be processed into calcium and magnesium oxide which has a very wide field of application and higher values. To obtain optimal results, we also identify the effect of temperature on the formation of oxide compounds. Preliminary study using XRF founded that dolomite in village Selamat is known as the highest concentration of CaO (61.20%) followed by MgO (25.28%). It is also showed that the main phase obtained by XRD is dolomite (CaMg(CO3)2). Furthermore, after the calcinations process at 700 °C, it was founded that the formation of dolomite were CaCO3 and MgO, whereas at temperatures of 900 °C mostly the CaCO3 has decomposed into CaO. SEM observations showed that dolomite has the composition of particles distributed homogeneously along the particle agglomerate when it calcinations.
Studies of Relation Between Turbidity and Refractive Indeks of Bottled Water in The Area of Banda Aceh by Using Interferometer Murty Method Nurlaili .; Nasrullah Idris; Adi Rahwanto
Journal of Aceh Physics Society Volume 1 Number 1 March 2012
Publisher : PSI-Aceh

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Abstract

Bottled water is clean water ready to drink quickly without cooking however, it is not all of the bottled water have a good quality. The quality of water can be observed from the optical properties of water, such as clarity and refractive index. A study has been carried out by using interferometer Murty method to know the relation between turbidity and refractive index of the bottled water. The refractive index measurement was carried out for 20 samples from 10 brands of the bottled water. The result of refractive index measurement shows that the refractive index of the water is about 1,1, in averge on the other hand the refractive index of water based on literature is 1,33. Along with the refractive index measurement by using interferometer Murty, turbidity was also measured by using Turbidimeter. The result of measurement show that there is a relation between turbidity and refractive index. The deviation of refractive index values obtained in this measurement from the literature data is because there are some error in the measurement process. By improving the error, better measurement will allow the interferometer Murty to be used to inspect water clarity.
Co-Authors Anak Agung Istri Sri Wiadnyani Andia Andia Habib Satria Indri Dayana Maidar Maidar Martha Rianna Maulinda Maulinda Nasrullah Idris Nirmala Sari Nurwijayanti Pajriana, Elisa Syarifah Rita Zahara Yusrizal Yusrizal Zulkarnain Jalil Zulkarnain Jalil Zulkarnain Jalil Zulkarnanin Jalil